Your best bet is meeting up with probably Barney or Jerry from The Croydon Disc Golf Club at the course one day. If they know you are going to be there they can bring some discs to lend you for a round, and/or bring some new ones for you to buy.
Hopefully they'll see this post and respond, if not just ask again and someone within hitting distance will give them a prod!
Sorry, fella, but after finally finding out what it's capable of I'm going to hang on to it.
I have however just done another big clear out of plastic and I have loads more to list and sell. Not the common or garden stuff this time, this is many of my special tournament discs/collectables I just don't have room for anymore. I'll give you first refusal on anything by way of compensation. Hope that makes up for not getting the comet?